py programe

 def mysplit(strng):

    # return [] if string is empty or contains whitespaces only

    if strng == '' or strng.isspace():

        return [ ]

    # prepare a list to return

    lst = []

    # prepare a word to build subsequent words

    word = ''

    # check if we are currently inside a word (i.e., if the string starts with a word)

    inword = not strng[0].isspace()

    # iterate through all the characters in the string

    for x in strng:

        # if we are currently inside a string...

        if inword:

            # ... and the current character is not a space...

            if not x.isspace():

                # ... update the current word

                word = word + x

            else:

                # ... otherwise, we've reached the end of the word so we need to append it to the list...

                lst.append(word)

                # ... and signal the fact that we are outside the word now

                inword = False

        else:

            # if we are outside the word and we've reached a non-white character...

            if not x.isspace():

                # ... it means that a new word has begun so we need to remember it and...

                inword = True

                # ... store the first letter of the new word

                word = x

            else:

                pass

    # if we've left the string and there is a non-empty string in the word, we need to update the list

    if inword:

        lst.append(word)

    # return the list to the invoker

    return lst

print(mysplit("To be or not to be, that is the question"))

print(mysplit("To be or not to be,that is the question"))

print(mysplit("   "))

print(mysplit(" abc "))

print(mysplit(""))